Anyone know any good resources for designing a intake manifold (ie papers, etc).
Anyone know any good resources for designing a intake manifold (ie papers, etc).
Does the SAE have an online index?
I don't have anything authoritative but have a read of the information this guy shares. He is an engineer fwiw.
http://www.rx7club.com/showthread.php?t=199788
Sort of a black art. Guys like Hogan aren't going to just write a how-to, as I suspect there is a reason why they cost thousands for a sheet metal fabricated jobber. Ask Warren Johnson? I seriously doubt there is going to be a how-to or white paper for design of a high performance manifold. OEMs don't really care beyond a certain level, and race teams beat other race teams with that information.
I'll bet OEMs run a CFD and try to minimize pressure drop across a broad range of flows via the throttle and the valve opening restrictions and test a bunch.
As a budding engineer you're probably hoping for more. if you really want to do a high performance job, call up some of the big names and ask them if you can intern for them or interview them or something.
This is the book I used in college. It seems to have appreciated in price by about 200% over what I paid for it, and I have seen copies sell for over $400.
It's a good book, and the approach to wave theory is taken somewhere in between "too high level to be useful" and "completely unintelligible". Definitely a great starting point though.
Any CFD you do needs to take into account the opening and closing timing of the valves. See here for example. The video makes it look trivial, and it's definitely easier than it used to be, but it's not straightforward.
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